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Porous coordination polymer, preparation method and application thereof

A porous coordination, polymer technology, applied in separation methods, chemical instruments and methods, educts, etc., can solve problems such as stenosis

Active Publication Date: 2018-12-07
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the carbon dioxide absorption capacity of these materials is moderate because their narrow, continuous and straight channels do not have enough space to hold large amounts of carbon dioxide

Method used

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  • Porous coordination polymer, preparation method and application thereof
  • Porous coordination polymer, preparation method and application thereof
  • Porous coordination polymer, preparation method and application thereof

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Embodiment Construction

[0073] 1. Design method, synthesis, structural characterization

[0074] Using solvothermal reaction, the CuBr 2 (18mg, 0.080mmol), H 2 NL l (4mg, 0.012mmol) and HBr (30μL) with 2mL N, N'-dimethylformamide (DMF) / H 2 O(4:1) container and sealed with Teflon vial and heated at 80°C for two days. After cooling down, green polyhedral crystals were obtained in high yield and washed with DMF.

[0075] The symmetric unit of the crystal consists of a ligand and a Cu 2+ Composition, wherein the asymmetric unit of NTU-23 (see image 3 a), the asymmetric unit of NTU-24 (see image 3 b), the asymmetric unit of NTU-25 (see image 3 c). per Cu 2+ Coordinated to four oxygen atoms from four separate carboxylic acid groups and N on imidazole from a fifth ligand. Two Cu 2+ Ions are a paddle wheel-like coordination scheme. From this connection point of view, each ligand connects three paddles, where the ligand of NTU-23 connects and one ligand is bridged by three copper clusters (see ...

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Abstract

The invention discloses a porous coordination polymer, a preparation method and application thereof, and belongs to inorganic materials. The preparation of the porous coordination polymer having an integration property is realized by the introduction of an alkyl group or the strategy of changing the position of the alkyl group. A prepared skeleton has a three-dimensional pore passage, and excellent water stability, thermal stability and acid-base stability. A breakthrough in the mixed gas based on the material indicates that the porous coordination polymer shows excellent methane / ethylene or methane / ethane selective separation capacity at room temperature. The polymer is expected to be used for the separation and purification of CH4 from natural gas, biogas, oil field gas and coal mine gallery gas, and can also be used for the purification of CH4 in a mixture of carbon dioxide, carbon monoxide, ethylene and the like.

Description

technical field [0001] The invention belongs to inorganic materials, and specifically relates to a high-porosity coordination polymer, a preparation method and an application. Background technique [0002] The relative abundance of methane in our world makes it the most important energy material in modern industrial and social life. The widespread use of methane can reduce the emission of environmental pollutants such as sulfur dioxide and dust by nearly 100%. However, natural gas, including shale gas, usually contains high concentrations of carbon dioxide, ethylene and ethane, which hinder the conversion of methane and cause corrosion of pipelines. Therefore, the selective removal of carbon dioxide and C 2 Hydrocarbons are an important process for methane purification. Improving separation efficiency is critical to industrial pressure swing adsorption (PSA) processes. So far, due to the high energy consumption and risk of conventional and existing methane purification t...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01D53/02C10L3/10
CPCB01D53/02C10L3/101C08G83/008B01D2256/245B01D2258/02B01D2258/05B01D2253/202Y02C20/40Y02P20/151
Inventor 段金贵曹海飞金万勤
Owner NANJING UNIV OF TECH
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